Wild Animals at Home Part 12

THE GROUND-SQUIRREL THAT PLAYS PICKET-PIN

Conspicuous in its teeming numbers in the Yellowstone Park is the Picket-Pin Ground-squirrel. On every level, dry prairie along the great river I found it in swarms.

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It looks much like a common Squirrel, but its coat has become more mud-coloured, and its tail is reduced by long ages of neglect to a mere vestige of the ancestral banner. It has developed great powers of burrowing, but it never climbs anything higher than the little mound that it makes about the door of its home.

The Picket-pin is an interesting and picturesque creature in some ways, but it has one habit that I cannot quite condone. In this land of sun and bright blue air, this world of outdoor charm, it comes forth tardily in late spring, as late sometimes as the first of May, and promptly retires in mid-August, when blazing summer is on the face of the earth, and the land is a land of plenty. Down it goes after three and one half short months, to sleep for eight and a half long ones; and since during these three and a half months it is above ground only in broad daylight, this means that for only two months of the year it is active, and the other ten, four fifths of its life, it pa.s.ses in a deathlike sleep.

Of course, the Picket-pin might reply that it has probably as many hours of active life as any of its kind, only it breaks them up into sections, with long blanks of rest between. Whether this defense is a good one or not, we have no facts at present to determine.

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It has a fashion of sitting up straight on the doorway mound when it wishes to take an observation, and the more it is alarmed by the approach of an enemy the straighter it sits up, pressing its paws tight to its ribs, so that at a short distance it looks like a picket-pin of wood; hence the name.

Oftentimes some tenderfoot going in the evening to stake out his horse and making toward the selected patch of gra.s.sy prairie, exclaims, "Good Luck! here's a picket-pin already driven in." But on leading up his horse within ten or twelve feet of the pin, it gives a little "_chirr_"

and dives down out of sight. Then the said tenderfoot realizes why the creature got the name.

The summer of 1897 I spent in the Park about Yancey's and there had daily chances of seeing the Picket-pin and learning its ways, for the species was there in thousands on the little prairie about my cabin. I think I am safe in saying that there were ten families to the acre of land on all the level prairie in this valley.

c.h.i.n.k AND THE PICKET-PINS

As already noted in the Coyote chapter, we had in camp that summer the little dog called c.h.i.n.k. He was just old enough to think himself a remarkable dog with a future before him. There was hardly anything that c.h.i.n.k would not attempt, except perhaps keeping still. He was always trying to do some absurd and impossible thing, or, if he did attempt the possible, he usually spoiled his best efforts by his way of going about it. He once spent a whole morning trying to run up a tall, straight, pine tree in whose branches was a snickering Pine Squirrel.

The darling ambition of his life for some weeks was to catch one of the Picket-pin Ground-squirrels that swarmed on the prairie about the camp.

c.h.i.n.k had determined to catch one of these Ground-squirrels the very first day he came into the valley. Of course, he went about it in his own original way, doing everything wrong end first, as usual. This, his master said, was due to a streak of Irish in his makeup. So c.h.i.n.k would begin a most elaborate stalk a quarter of a mile from the Ground-squirrel. After crawling on his breast from tussock to tussock for a hundred yards or so, the nervous strain would become too great, and c.h.i.n.k, getting too much excited to crawl, would rise on his feet and walk straight toward the Squirrel, which would now be sitting up by its hole, fully alive to the situation.

After a minute or two of this very open approach, c.h.i.n.k's excitement would overpower all caution. He would begin running, and at the last, just as he should have done his finest stalking, he would go bounding and barking toward the Ground-squirrel, which would sit like a peg of wood till the proper moment, then dive below with a derisive chirrup, throwing with its hind feet a lot of sand right into c.h.i.n.k's eager, open mouth.

Day after day this went on with level sameness, and still c.h.i.n.k did not give up, although I feel sure he had bushels of sand thrown in his mouth that summer by the impudent Picket-pins.

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Perseverance, he seemed to believe, must surely win in the end, as indeed it did. For, one day, he made an unusually elaborate stalk after an unusually fine big Picket-pin, carried out all his absurd tactics, finishing with the grand, boisterous charge, and actually caught his victim; but this time it happened to be a _wooden_ picket-pin. Any one who doubts that a dog knows when he has made a fool of himself should have seen c.h.i.n.k that day as he sheepishly sneaked out of sight behind the tent.

CHIPMUNKS

Every one recognizes as a Chipmunk the lively little creature that, with striped coat and with tail aloft, dashes across all the roads and chirrups on all the log piles that line the roads throughout the timbered portions of the Park. I am sure I have often seen a thousand of them in a mile of road between the Mammoth Hot Springs and Norris Geyser Basin. The traveller who makes the entire round of the Park may see a hundred thousand if he keeps his eyes open. While every one knows them at once for Chipmunks, it takes a second and more careful glance to show they are of three totally distinct kinds.

THE GROUND-SQUIRREL THAT PRETENDS IT'S A CHIPMUNK

First, largest, and least common, is the Big Striped Ground-squirrel, the Golden Ground-squirrel or Say's Ground-squirrel, called scientifically _Citellus lateralis cinerascens_. This, in spite of its livery, is not a Chipmunk at all but a Ground-squirrel that is trying hard to be a Chipmunk. And it makes a good showing so far as manners, coat and stripes are concerned, but the incontrovertible evidence of its inner life, as indicated by skull and makeup, tells us plainly that it is merely a Ground-squirrel, a first cousin to the ign.o.ble Picket-pin.

I found it especially common in the higher parts of the Park. It is really a mountain species, at home chiefly among the rocks, yet is very ready to take up its abode under buildings. At the Lake Hotel I saw a number of them that lived around the back door, and were almost tamed through the long protection there given them. Like most of these small rodents, they are supposed to be grain-eaters but they really are omnivorous, and quite ready to eat flesh and eggs, as well as seeds and fruit. Warren in his "Mammals of Colorado," tells of having seen one of these Ground-squirrels kill some young Bluebirds; and adds another instance of flesh-eating observed in the Yellowstone Park, where he and two friends, riding along one of the roads, saw a Say Ground-squirrel demurely squatting on a log, holding in its arms a tiny young Meadow Mouse, from which it picked the flesh as one might pick corn from a cob.

Meadow Mice are generally considered a nuisance, and the one devoured probably was of a cantankerous disposition; but just the same it gives one an unpleasant sensation to think of this elegant little creature, in appearance, innocence personified, wearing all the insignia of a grain-eater, yet ruthlessly indulging in such a b.l.o.o.d.y and cannibal feast.

A FOUR-LEGGED BIRD--THE NORTHERN CHIPMUNK

The early naturalists who first made the acquaintance of the Eastern Ground-squirrel named it Tamias or "The Steward." Later the Northern Chipmunk was discovered and it was found to be more of a Chipmunk than its Eastern cousin. The new one had all the specialties of the old kind, but in a higher degree. So they named this one _Eutamias_, which means "good" or "extra good" Chipmunk. And extra good this exquisite little creature surely is in all that goes to make a charming, graceful, birdy, pert and vivacious four-foot. In everything but colours it is Eutamias or Tamias of a more intensified type. Its tail is long in proportion and carried differently, being commonly held straight up, so that the general impression one gets is of a huge tail with a tiny striped animal attached to its lower end.

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Its excessive numbers along the roads in the Park are due to two things: First, the food, for oats are continually spilled from the freighting wagons. Second, the protection of piles of pine trees cut and cast aside in clearing the roadway.

There is one habit of the Eastern Chipmunk that I have not noted in the mountain species, and that is the habit of song. In the early spring and late autumn when the days are bright and invigorating, the Eastern Chipmunk will mount some log, stump or other perch and express his exuberant joy in a song which is a rapid repet.i.tion of a bird-like note suggested by "Chuck," "Chuck," or "Chock," "Chock." This is kept up two or three minutes without interruption, and is one of those delightful woodland songs whose charm comes rather from a.s.sociation than from its inherent music.

If our Western Chipmunk is as far ahead in matters musical as he is in form and other habits, I shall expect him to render no less than the song of a nightingale when he gives himself up to express his wild exuberance in a chant.

I shall never forget the days I spent with a naturalist friend in an old mill building in western Manitoba. It was in a pine woods which was peopled with these little Chipmunks. They had hailed the mill and its wood piles, and especially the stables, with their squandered oats, as the very gifts of a beneficient Providence for their use and benefit.

They had concentrated on the mill; they were there in hundreds, almost thousands, and whenever one looked across the yard in sunny hours one could see a dozen or more together.

The old mill was infested with them as an old brewery with rats. But in many respects besides beauty they were an improvement on rats: they did not smell, they were not vicious, and they did not move by night.

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During the daytime they were everywhere and into everything. Our slender stock of provisions was badly reduced when, by mischance, the tin box was left open a few hours, but we loved to see so much beautiful life about and so forgave them. One of our regular pleasures was to sit back after a meal and watch these pert-eyed, four-legged birds scramble onto the table, eat the sc.r.a.ps and lick all the plates and platters clean.

Like all the Chipmunks and Ground-squirrels, this animal has well-developed cheek-pouches which it uses for carrying home seeds and roots which serve for food in the winter. Or perhaps we should say in the early spring, for the Chipmunk, like the Ground-squirrel, goes into the ground for a long repose as soon as winter comes down hard and white.

Yet it does not go so early or stay so late as its big cousin. October still sees it active, even running about in the snow. As late as October 31st at Breckenridge, Col., I saw one sitting up on a log and eating some gra.s.s or seeds during a driving snowstorm. High up in the Shoshonees, after winter had settled down, on October 8, 1898, I saw one of these bright creatures bounding through the snow. On a stone he paused to watch me and I made a hasty sketch of his att.i.tude.

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Then, again, it is out in the spring, early in April, so that it is above ground for at least seven months of the year. Its nest is in a chamber at the end of a long tunnel that it digs under ground, usually among roots that make hard digging for the creatures that would rout them out. Very little is known as yet, however, about the growth or development of the young, so here is an opportunity for the young naturalist who would contribute something to our knowledge of this interesting creature.

A STRIPED PIGMY--THE LEAST CHIPMUNK

Closely akin to this one and commonly mistaken for its young, is the Least Chipmunk (_Eutamias minimus_), which is widely diffused in the great dry central region of the Continent. Although so generally found and so visible when found, its history is practically unknown. It probably lives much like its relatives, raising a brood of four to six young in a warm chamber far underground, and brings them up to eat all manner of seeds, grains, fruits, herbs, berries, insects, birds, eggs, and even mice, just as do most of its kinsmen, but no one has proved any of these things. Any exact observations you may make are sure to be acceptable contributions to science.

IX

The Rabbits and their Habits

[Ill.u.s.tration: XXVII. The Snowshoe Hare is a cross between a Rabbit and a Snowdrift _Captives; photo by E. T. Seton_]

[Ill.u.s.tration: XXVIII. The Cottontail freezing _Photos after sunset, by E. T. Seton_]